<div>
if(document.selectElementB<wbr />yId('your_<wbr />file_field<wbr />_id).value<wbr />.lastIndex<wbr />Of('txt') &lt;&nbsp;0)<br />
alert('not found')<br />
else<br />
alert('correct');<br />
HTH<br />
Ivo Stoykov<br />

</div>


if(document.selectElementById('your_file_field_id).value.lastIndexOf('txt') < 0)
alert('not found')
else
alert('correct');
HTH
Ivo Stoykov


<div>
i think this cannot be done with simple FILEUPLOAD control, you need to create a usercontrol which inhertis the fileupload control and perform client script actions.
</div>


i think this cannot be done with simple FILEUPLOAD control, you need to create a usercontrol which inhertis the fileupload control and perform client script actions.

<div>
thankx ddayx10<br />
<br />
your script is working<br />
&nbsp;now i just want to blank the fileUpload textbox<br />
<br />
how can i ?
</div>


thankx ddayx10

your script is working
 now i just want to blank the fileUpload textbox

how can i ?

<div>
in firefox its not working<br />
<br />
&nbsp;onpropertychange=&quot;fileChec<wbr />k();&quot; <br />
<br />
if you know the solution please let me know<br />
<br />
thanks
</div>


in firefox its not working

 onpropertychange="fileCheck();"

if you know the solution please let me know

thanks

<div>
<br />
<br />
buddy i solved it, instead of onpropertychange i using onchange<br />
<br />
<br />
thankx all of you 
</div>




buddy i solved it, instead of onpropertychange i using onchange


thankx all of you

<div>
<div class="content wysiwyg-content">
Dear Friend,<br />
<br />
i want to check the extension of the file when the user select the file by using the FileUpload control<br />
<br />
i have javascript but i want it to call when the user select the file and after click on the open button.<br />
<br />
so how can i call to javascript when the user select the file.<br />
<br />
Thanks<br />
<br />

</div>
</div>


Dear Friend,

i want to check the extension of the file when the user select the file by using the FileUpload control

i have javascript but i want it to call when the user select the file and after click on the open button.

so how can i call to javascript when the user select the file.

Thanks



FileUpload Control with javascript

JScript is Microsoft's dialect of the ECMAScript standard that is used in Microsoft's Internet Explorer. JScript is implemented as an Active Scripting engine, so it can be "plugged in" to OLE Automation applications that support Active Scripting, such as Internet Explorer, Active Server Pages, and Windows Script Host. It also means such applications can use multiple Active Scripting languages, e.g., JScript, VBScript or PerlScript.

JScript

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).